If you built it I would come
I've already given this idea to the on-duty manager of the grocery store where I shop but she probably filed it under looney ideas gleaned from talkative old men in the checkout line and did little or nothing else with it, so I'm offering it to any of my programmer friends who might want to make a name for themselves and in the process create a useful tool for crazies like me who look for innovative ways to use our Internet connection. I, like most everybody else and maybe even you, dutifully hand the cashier my «value card» as he or she is about to ring up my purchases so that I can get the discounts that accrue from having given them my name and address and having allowed them to tag me with a unique Customer ID. They use it, among other things, to print out a listing of the items I have purchased that day, neatly categorized into sections like Produce, Package Meat, Grocery, Frozen Food, Dairy, Candy/Gum, etc., and at the conclusion of that listing they announce that Your Savings Today was $7.48 on my most recent (9/16/07) expenditure of $56.66. I walk away, informed and satisfied that it could have been at least $7.48 worse.